Mallard Slough   Be the first to submit input for Mallard Slough. If you have info on Mallard Slough, Marshall County, South Dakota please submit it here to improve this web site.          These outdoors activities are available near Mallard Slough.   Lakes Near Mallard Slough: Waubay Lake, Day County, 16 miles away   Public Lands Near Mallard Slough: Fort Sisseton State Park, South Dakota, 1 miles away Roy Lake State Park, South Dakota, 7 miles away Pickerel Lake Recreation Area, South Dakota, 20 miles away   Hotels Near Mallard Slough: Super 8 Sisseton, Sisseton, 36 miles away Super 8 Lisbon, Lisbon, 38 miles away Best Western Ramkota Hotel, Watertown, 47 miles away Rodeway Inn Watertown, Watertown, 48 miles away Super 8 Watertown, Watertown, 49 miles away